Academic literature on the topic 'Teeth implant'

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Journal articles on the topic "Teeth implant"

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Satwalekar, Parth, Tanushree Satwalekar, Vasanthi Bondugula, B. Bhuvaneshwari, KV Harshavardhan, and Kiran Pasula. "Creating Esthetic Harmony with Nonloading, Fixed Provisional Restoration using Extracted Teeth after Immediate Implant Placement." Journal of Contemporary Dental Practice 17, no. 4 (2016): 344–46. http://dx.doi.org/10.5005/jp-journals-10024-1852.

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ABSTRACT Aim To make use of fiber-reinforced composite and the patient's own extracted teeth in fabricating a provisional restoration following immediate implant placement. Background Fiber-reinforced composites offer various possibilities in temporization of osseointegrating implants in the esthetic zone. Technique In this chairside technique, the patient's own extracted teeth with fiber-reinforced composite were used to fabricate a provisional restoration after immediate implant placement. Conclusion A putty index was made before extracting the teeth and placing the implants as planned. The index and crowns of the extracted teeth were used to make a nonloading, esthetic, chairside provisional restoration after immediate implant placement. Clinical significance By using the patient's own teeth for provisionalization immediately after implant placement, acceptance is greatly enhanced. How to cite this article Satwalekar P, Satwalekar T, Bondugula V, Bhuvaneshwari B, Harshavardhan KV, Pasula K. Creating Esthetic Harmony with Nonloading, Fixed Provisional Restoration using Extracted Teeth after Immediate Implant Placement. J Contemp Dent Pract 2016;17(4):344-346.
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Horwitz, Jacob, Eli E. Machtei, Shai Frankental, Eran Gabay, Yaniv Mayer, Livia Joseph, and Omer Cohen. "Clinical and Patient-Related Outcomes of a Tapered Implant System With Switched Platform Conical Abutments: A Private Practice Field Trial." Journal of Oral Implantology 44, no. 5 (October 1, 2018): 326–29. http://dx.doi.org/10.1563/aaid-joi-d-18-00005.

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The aim of this prospective cohort observational field trial was to examine 1-year survival and success rates of a recently introduced tapered implant system with switched platform conical abutments and to evaluate patient related outcomes of therapy. Partially edentulous patients aged between 18 and 75 years, with available bone height for dental implants ≥10 mm desiring to restore the missing tooth/teeth with implant supported restoration, were recruited by 7 periodontists in their respective private practices. Dental implants were installed according to standard implant therapy protocol. Three to 6 months postoperatively, after evaluating interim implant success, implants were restored by the referring dentists. Patient, Ramfjord teeth, and implant data, including baseline and 1-year postoperative, were collected. A total of 60 patients were recruited and received 117 implants. Complete 1-year clinical and radiographic data were available for 83 and 65 implants, respectively. Two implants failed during the first year, resulting in a 1-year survival rate of 98.3%. Mean implant probing pocket depth was 2.29 ± 0.84 mm. Mean radiographic bone distance from implant's shoulder at the mesial and distal sites at 1 year was 0.66 ± 0.5 and 0.79 ± 0.64mm, respectively, resulting in a success rate of 95.4%. Patient subjective evaluation of therapy exhibited a median pain experience of 1 and median esthetics, function, and general satisfaction evaluation of 10 on a scale of 1 to 10. The tapered conical connection dental implant system, used in private dental practices, shows good 1-year survival and success rates that are similar to other implant systems on the market.
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Singh, Ajit. "DENTAL IMPLANT DESIGN- AN INSIGHT OVERVIEW." Journal of Medical pharmaceutical and allied sciences 10, no. 4 (August 15, 2021): 3101–5. http://dx.doi.org/10.22270/jmpas.v10i4.1254.

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Dental implants are a proven therapeutic option for replacing missing teeth, with positive long-term health outcomes. Dental implant performance is largely determined by the implant’s primary durability, which is affected by surgical procedure, bone quality and quantity, implant surface characteristics, implant geometry, and implant surface characteristics. The implant’s geometry and surface can be modified. The implant geometry and surface can be changed if needed to achieve good primary stability and long-term implant therapy effectiveness. Implant architecture refers to the implant’s three-dimensional structure, as well as all of the components and elements that make it up. Different surface topographies can affect a sequence of coordinated actions such cell proliferation, osteoblast transformation, and the production of bone tissue. At the macro, micro, and increasingly nano sizes, surface topography of implants may be detected. The surgical location of end osseous oral implants is influenced by the prosthetic architecture, as well as the shape and quality of the alveolar bone. There are several alternatives for replacing missing teeth, but within the past few decades, dental implants have been one of the most common biomaterials for replacing one (or more) missing teeth. In a substantial number of patients, titanium dental implants have been shown to be secure and reliable. This study examines the most important historical information of dental implants, as well as the various vital factors that will ensure successful Osseo-integration and a safe prosthesis anchorage. Not only
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Chaichanasiri, E., P. Nanakorn, W. Tharanon, and J. Vander Sloten. "A Finite Element Study of the Effect of Contact Forces Between an Implant-Retained Crown and its Adjacent Teeth on Bone Stresses." Journal of Mechanics 25, no. 4 (December 2009): 441–50. http://dx.doi.org/10.1017/s1727719100002926.

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ABSTRACTMost of finite element (FE) models used to study single tooth dental implants consider only an isolated implant. It is of course more realistic to model also the adjacent teeth of the implant. However, including the adjacent teeth significantly increases the complexity of the model and necessitates the complex contact analysis. The main difference between the FE models with and without the adjacent teeth is that the model without the adjacent teeth cannot capture the effect of the contact forces that are transferred between the implant-retained crown and the adjacent teeth. In this study, the hypothesis that the contact forces are not important is verified by the FE contact analysis. Realistic 3D FE models of a mandible and a single tooth implant with and without adjacent teeth are constructed and analyzed. It is found from the results that the difference between the maximum bone stresses of the two models is very small when various loading directions are considered. The obtained results, therefore, indicate that the effect of contact forces between a dental implant and its adjacent teeth is not significant. Consequently, the adjacent teeth can be excluded from FE models if various loading directions are considered.
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Nirola, Ashutosh, and Shallu Bhardwat. "Immediate Implant Placement: Success or Failure?" Dental Journal of Advance Studies 01, no. 01 (April 2013): 046–48. http://dx.doi.org/10.1055/s-0038-1670594.

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AbstractEdentulism is most often the result of repeated tooth extraction from combined pathological process and/or dental trauma. Dental implants have emerged to be a highly successful and predictable treatment modality for replacement of missing teeth. Dental implants are the devices that are surgically inserted into the jaw bone to support a single prosthetic tooth and serve as abutments or as cosmetic replacements for missing teeth. Timing of implant placement following tooth removal may be important and this concept has challenged the original treatment protocol. This article aims to present two case reports of immediate placement of implant.
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Borgonovo, Andrea Enrico, Rachele Censi, Virna Vavassori, Mauro Savio, and Dino Re. "A Possible Relationship between Peri-Implantitis, Titanium Hypersensitivity, and External Tooth Resorption: Metal-Free Alternative to Titanium Implants." Case Reports in Dentistry 2021 (January 22, 2021): 1–8. http://dx.doi.org/10.1155/2021/8879988.

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Titanium dental implant surface does not remain unaltered but may corrode and release ions or particles which trigger soft and hard tissue damage. Titanium may induce clinically relevant hypersensitivity in patients chronically exposed. A 56-year-old female patient presented peri-implantitis around a single titanium implant positioned three years earlier. Despite nonsurgical therapy, a rapid bone loss associated with pain and swelling occurred, and adjacent teeth presented external resorption. Compromised teeth were removed, and three titanium implants were inserted. Six months later, the patient complained about high mucosa sensitivity and implant exposure. At clinical and radiographic examinations, tissue inflammation and vertical bone loss involved the new implants and the process of external resorption affected the teeth. The blood test confirmed titanium hypersensitivity. Titanium implants were removed, and 5 zirconia implants were placed. No sign of bone loss or tooth resorption was recorded at clinical and radiographic control during 18 months of follow-up.
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BORGES, Adriana Fonseca, Mariana Ribeiro de Moraes REGO, Alexandre Milton CORRÊA, Marcelo Ferreira TORRES, Daniel de Moraes TELLES, and Luiz Carlos SANTIAGO. "Planning and treatment in oral rehabilitation with implant-supported prostheses using cephalometric analysis." RGO - Revista Gaúcha de Odontologia 62, no. 2 (June 2014): 179–84. http://dx.doi.org/10.1590/1981-86372014000200000131886.

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There are growing prosthetic and esthetic demands for Oral Rehabilitations on osseointegratable implants, requiring precise prosthetic-surgical planning. In edentulous patients planning may be done using cephalometric analysis to determine the position of the teeth in the dental prosthesis, and consequently, those of the implants. In this clinical case, the planning and treatment of an oral implant-supported rehabilitation is described, using cephalometry to optimize prosthetic success and patient comfort. The patient presented complete mandibular and partial maxillary edentulism, with unsatisfactory esthetics and function of the anterior teeth, with accentuated vestibular inclination. In order to determine the correct position of maxillary teeth it was necessary to use a Steiner cephalometric tracing to position the maxillary central incisor in the diagnostic wax-up. Therefore, the maxillary anterior teeth were extracted, osseointegratable implants were placed (Neodent(r), Curitiba, Brazil), and an immediate temporary fixed denture was inserted. After 30 days, surgery was performed for the placement of 4 osseointegratable implants (Neodent(r), Curitiba, Brazil) in the inter-mentonian region, on which a complete, temporary, implant-supported denture was placed. After the period of osseointegration, the definitive implant-supported dental prosthesis were fabricated.
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Stefanelli, Luigi V., George A. Mandelaris, Alessio Franchina, Nicola Pranno, Michele Pagliarulo, Francesca Cera, Fabio Maltese, Francesca De Angelis, and Stefano Di Carlo. "Accuracy of Dynamic Navigation System Workflow for Implant Supported Full Arch Prosthesis: A Case Series." International Journal of Environmental Research and Public Health 17, no. 14 (July 13, 2020): 5038. http://dx.doi.org/10.3390/ijerph17145038.

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A minimally invasive implant treatment approach for future full arch implant prosthetic rehabilitations of trophic jaws represents a challenge. An optimal implant planning is strongly related with an accurate merge of the prosthetic information and the radiographic data. To comply with that, most computer aided implantology (CAI) systems require additional steps, as radiographic stents or fiducial markers to overlap digital jaw scans to cone beam computed tomography (CBCT) data. Using dynamic CAI, residual teeth (up to three) make it possible for the merge to avoid new radiographic scans. An additional challenge is the treatment involving immediate implants compared with delayed implants placed into healed bone. As for other static CAI systems, the operator’s experience and the quality of the CBCT data make the planning affordable and secure the entire implants placement procedure. The literature reports accuracies in terms of comparison between placed implants and planned implants, following a double CBCT approach, based on radiographic volume overlapping. Thirteen consecutive future totally edentulous patients (77 implants), divided into two groups (group A: 3–4 teeth traced; group B: 5–6 teeth traced) requiring a full arch implant prosthetic rehabilitation were included in the reported case series. A dynamic CAI was used to plan and to place all implants following all the recommended digital steps. The software used provided a tool (Trace and Place) that made the merge between X-ray views of the residual teeth and their own positions possible. This method definitely registered that teeth positions comply with the required accuracy live check. After implants placement, a post-operative CBCT was taken in order to evaluate the deviations of the achieved implants at coronal, apical, and depth level as well as angular deviations. Statistically significant radiological mean difference between the two groups was found in the coronal position of implants (0.26 mm, p < 0.001), in the apical position of implants (0.29 mm, p < 0.001), in the depth of implants (0.16 mm, p = 0.022), and in the angular deviation (0.7, p = 0.004). The use of the TaP technology for the treatment of the patients with at least three stable teeth that need to be removed for a totally implant prosthetic treatment is a promising technique. The performed accuracy analysis demonstrated that this digital protocol can be used without a loss of accuracy of the achieved implants compared to planned ones.
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Scarano, Antonio, Bartolomeo Assenza, Francesco Inchingolo, Filiberto Mastrangelo, and Felice Lorusso. "New Implant Design with Midcrestal and Apical Wing Thread for Increased Implant Stability in Single Postextraction Maxillary Implant." Case Reports in Dentistry 2019 (September 5, 2019): 1–4. http://dx.doi.org/10.1155/2019/9529248.

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Background. The immediate placement of a dental implant could represent an option treatment for the rehabilitation of a postextractive missing tooth socket to replace compromised or untreatable teeth, with the advantage of single-session surgery. In this way, the anatomy of the alveolar bone defect, the preservation of the buccal cortical bone, and the primary stability of the fixture represent the critical factors that consent a precise implant placement. Objective. This case report describes a novel fixture design for postextractive alveolar socket immediate implant. Methods. Two patients (25 and 31 years old) were treated for postextractive dental implant placement to replace both central upper incisor teeth with four implants. The residual bone implant gap was not filled with graft or bone substitute. The restoration was provided following a standard loading protocol by a cement-sealed prosthetic abutment. Results. Clinically, all implants positioned showed an excellent insertion torque. No postoperative complications were reported. At 6 months of healing, the buccal cortical bone and the implant stability were present and well maintained. Conclusion. The evidence of this study allows us to underline the possible advantages of this new fixture design for postextractive implant technique.
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Hoffmann, Oliver, and Gregory-George Zafiropoulos. "Tooth-Implant Connection: A Review." Journal of Oral Implantology 38, no. 2 (April 1, 2012): 194–200. http://dx.doi.org/10.1563/aaid-joi-d-10-00071.

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The aim of this review was to assess the long-term outcomes of restorations supported by implants and natural teeth with regard to complications associated with implants, teeth, and restorations, as well as the influence on these parameters of the connector type used. A net-based search in PubMed was combined with a manual search. Clinical studies, reviews, and biomechanical studies were included. Information on survival rate, complication rate, incidence of tooth intrusion, and, where applicable, type of connector used, was retrieved from the clinical studies. Force distribution and types of connectors used were retrieved from the biomechanical study. A summary of outcomes was retrieved from the reviews. A total of 25 articles were selected for inclusion in this review, including clinical studies (15), biomechanical studies (7), and reviews (3). Implant success rates ranged from 79.5%–100%. Tooth complications occurred in 5.4%–11.8% of cases. Complications in the suprastructure were observed in 5%–90% of cases. Tooth intrusion presented in a total of 0%–66% of all cases, more often in cases with nonrigid connection (0%–66%) than in cases with rigid connection (0%–44%). Biomechanical studies show a large difference in stress distribution and in dependence on the type of connector used, with most studies demonstrating that nonrigid connectors drastically reduce stress on the suprastructure while increasing forces on supporting teeth and implants. Long-term success rates for tooth-implant connections are lower than for solely implant-supported restorations with regard to prognosis for teeth, implants, and suprastructure. Use of rigid connectors leads to more favorable clinical outcomes in terms of long-term stability, occurrence of complications, and tooth intrusion.
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Dissertations / Theses on the topic "Teeth implant"

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Shahdad, Shakeel. "The wear of different artificial denture teeth used in implant-retained prostheses." Thesis, University of Newcastle upon Tyne, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485797.

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Edentulous persons have been reported as 'oral invalids and very handicapped' in masticatory function. These patients are usually older people and can be successfully restored with implant-retained prostheses (IRP). However, a high rate of wear is apparent on the artificial teeth in IRP and opposing dentures necessitating prostheses to be remade partially or in total. Such maintenance has considerable clinical and laboratory cost implications, since it forms 1'. an increasing part of dentists' workload. The study investigated the wear rates among Various artificial tooth materials when subject to forces that represented those experienced in the clinical situation. The effect of abrasive slurry on the rate of wear was also investigated, as were the changes in hardness when artificial teeth were stored in food simulating solvents. A series of experiments was carried out in order to investigate these parameters on four commercially available Vivodent (VIV), Postaris (Del), Orthosit (aRT), Candulor (paR), and two experimental denture tooth materials; Experimental 1 (EXP1) and Experimental 2 (EXP2). Perspex (PER) was used as a control material. Two-body wear test A multi station wear-testing machine was constructed and used to test standardised hemispherical specimens against flat ones and measure the amount of wear using a non-contacting laser profiler to determine the depth of wear scar. Different material combinations were tested including materials worn against themselves and against hemispherical steatite abraders. Measurements were made following 2000 cycles and 10,000 cycles. Wearrates were determined as mean cross sectional area of the scar (Ilm/1 000 cycles). The results of this work revealed some interesting observations. Not all the specimens showed the classical wear pattern by creating a wear track on the flat specimen when the hemispherical abrader was sliding against it. Instead, in some material combinations there was a positive build up of material along the track and therefore a simple quantitative measurement of wear was not possible on all the specimens. The materials with a positive build up demonstrated an adhesive type of wear rather than the abrC?sive wear, which were further analysed under SEM. A technique was developed to measure wear occurring on hemispherical abraders. These were also qualitatively analysed under tool makers microscope and SEM. Abrasive and adhesive wear processes were noticed depending on the material combination tested. Three-body wear test Three-body abrasive wear tests were carried out on flat specimens using a toothbrushing machine with abrasive slurry. A laser profiler was used to measure the depth of wear scar. Measurements were made following 10,000 cycles except in porcelain specimens where measurements could only be recorded after 100,000 cycles. Wear rates were determined as mean depth mm/l 000 cycles. POR, EXPl and ORT demonstrated significantly (P<0.5) lower three-body wear rate when compared to the other materials. There was no significant difference in the wear rates between PER, VIV, DeL, and EXP2. Similarly, there was no significant difference between POR, EXPl and ORT. Effect of solvent storage on hardness The materials were tested for Martens Hardness measurements (HM) aHer storage in peppermint oil. 75% ethanol and heptane. Distilled water was used as a control storage medium. One specimen from each material group was stored in each solvent for 1 minute. 5 minutes. I hour. 24 hours. 1week and 1 month respectively. One specimen from each group was also tested dry to establish the baseline HM value. One-way ANOVA using Tukey's test on polymer based materials showed that the hardness of ORT and EXP 1 was significantly higher than the PMMA, Del and EXP2 (P
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Viljoen, André John. "The linking of a Brånemark implant to a natural tooth." University of Sydney, 1992. http://hdl.handle.net/2123/4824.

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Master of Dental Surgery
This work was digitised and made available on open access by the University of Sydney, Faculty of Dentistry and Sydney eScholarship . It may only be used for the purposes of research and study. Where possible, the Faculty will try to notify the author of this work. If you have any inquiries or issues regarding this work being made available please contact the Sydney eScholarship Repository Coordinator - ses@library.usyd.edu.au
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Allen, Patrick Finbarr. "An assessment of oral implant therapy outcomes using health status measures." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310033.

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Tsigarida, Alexandra. "Investigations on the microbial community associated with peri-implantitis in smokers and non-smokers." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1371071124.

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Bosc, Romain. "Impact des tissus mous sur les méthodes acoustiques d’évaluation de la stabilité des implants osseux." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC0009.

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Ce travail porte sur l’étude du comportement biomécanique d’un modèle cadavérique et d’un modèle in vitro de l’arthroplastie totale de hanche. Nous avons cherché à mettre en relief et à étudier des paramètres qui pouvaient nous permettre de disposer d’une méthode d’analyse objective de la stabilité de l’implant acétabulaire. La première partie décrit le contexte de l'étude. Nous avons insisté sur les différentes méthodes d’analyses qui permettent d’analyser la stabilité d’un implant osseux. En effet, malgré l’utilisation quotidienne des implants, le taux d’échec d’ostéointégration reste élevé. Ces échecs s’accompagnent d’une morbidité importante et d’un surcout notable. Parmi les causes d’échec identifiées, le descellement aseptique de la cupule acétabulaire dans l’arthroplastie de hanche peut être lié à un défaut de stabilité primaire, non obtenu lors de l’intervention chirurgicale. Il a été montré que le descellement de la cupule acétabulaire pouvait résulter d'une faible stabilité primaire entre la cupule et l'os l'entourant. Les chirurgiens qui pratiquent l’arthroplastie de hanche évaluent de manière empirique la stabilité obtenue ou non de l’implant acétabulaire en écoutant le son produit lorsqu'ils impactent la cupule ou à leur ressenti en la manipulant. Une méthode d'estimation de la stabilité primaire pourrait permettre au chirurgien orthopédique de mieux appréhender la stabilité des implants qu’il pose au bloc opératoire. L'objet principal de ce travail de thèse était ainsi d'étudier les signaux d'impacts sur le cotyle prothétique. Dans un premier temps, nous avons réalisé une étude de l'insertion de la cupule par impacts sur un modèle cadavérique (sujets anatomiques de l’école de chirurgie du fer à moulin) dans des conditions proches de celle de l'opération en clinique. Une corrélation a été trouvée entre le moment d'impact et la stabilité (R2=0.69). Cette étude expérimentale a ainsi montré le potentiel de la méthode de traitement des signaux d'impact dans la prédiction de la stabilité primaire de la cupule acétabulaire. Mais nous avons observé des modifications entre les signaux obtenus sur les différents sujets. Nous avons posé comme hypothèse que ces modifications étaient liées à la variation des tissus mous entre chaque sujet. Le troisième volet de cette thèse a donc porté sur l’analyse du comportement biomécanique de notre modèle en présence d’une quantité plus ou moins importante de muscle.Nous avons utilisé à nouveau le modèle in vitro que nous avions développé et avons ajouté dans le système d’impaction des tranches de poitrine de dinde d’épaisseur variable. Le but de cette seconde étude était d’intégrer le paramètre lié à l’existence d’une épaisseur variable de tissus mous dans l'interaction dynamique entre le marteau, l'ancillaire (et la cupule) et le tissu osseux lors de l'insertion. La valeur de la moyenne et de l’écart-type de l'indicateur Im obtenues pour tous les échantillons et toutes les configurations pour une valeur d’épaisseur des tissus mous égale à 10 mm (respectivement 30 mm) étaient égales à 0,592 ± 0,141 (respectivement 0,552 ± 0,139). L’analyse statistique a montré qu'il n'y avait pas eu d'effet significatif de la valeur de l’épaisseur des tissus mous sur les valeurs de l'indicateur Im (F = 3,16; p = 0,08). Malgré les limitations évidentes d’une étude in vitro sur un modèle partiel d’arthroplastie totale de hanche, ces résultats, ainsi que les résultats précédents obtenus sur les sujets anatomiques, montrent la faisabilité du développement d'un dispositif médical dédié à l'estimation de la stabilité de l'implant acétabulaire et qui pourrait être utilisé comme système d'aide à la décision par le chirurgien orthopédique
Abstract:This work studies the biomechanical behavior of a cadaveric model and an in vitro model of total hip arthroplasty. We sought to highlight and study parameters that could allow us to have a method of objective analysis of the stability of the acetabular cup implant.The first part describes the context of the study. We have emphasized the different methods of analysis that make it possible to analyse the stability of a bone implant. Indeed, despite the daily use of implants, the failure rate of osseointegration remains high and failures still happen due to inadequate mechanical behavior of the prosthesis.Among the identified causes of failure, aseptic loosening of the acetabular cup after hip arthroplasty may be related to a primary defect in stability, not achieved during the surgical procedure. It has been shown that loosening of the acetabular cup may result from poor primary stability between the prosthetic cup and the surrounding bone.A method of estimating primary stability could allow the orthopaedic surgeon to better control the stability of the implants he poses in the operating room.The main purpose of this thesis work was to study the impact signals on the prosthetic acetabulum.Firstly, we carried out a study of the insertion of the cup by impacts on a cadaveric model. A correlation was found between impact time and stability (R2 = 0.69). This experimental study has thus shown the potential of the impact signal processing method in predicting the primary stability of the acetabular cup. But we observed changes between the signals obtained on the different subjects. We hypothesized that these changes were related to soft tissue variation between subjects.The third part of this thesis focused on analysing the biomechanical behavior of our model in the presence of soft tissues.We used again the in vitro model that we had developed and added in the impaction system turkey slices of varying thickness.The purpose of this second study was to integrate the parameter related to the existence of a variable thickness of soft tissues in the dynamic interaction between the hammer, the ancillary (and the cup) and the bone tissue during the insertion. The mean and standard deviation of the Im indicator obtained for all samples and configurations at a soft tissue thickness value of 10 mm (30 mm) was 0.592 ± 0.141, (respectively 0.552 ± 0.139). Statistical analysis showed that there was no significant effect of the value of soft tissue thickness on the values of the Im indicator (F = 3.16, p = 0.08). Despite the obvious limitations of an in vitro study on a partial model of total hip arthroplasty, these results, as well as the previous results obtained on anatomical subjects, show the feasibility of developing a medical device dedicated to estimating the stability of the acetabular implant and which could be used as a decision support system by the orthopaedic surgeons
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Pedrosa, Alexsander Ribeiro. "Análise química e topográfica em superfícies tratadas de implantes osseointegráveis de titânio." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2011. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=158.

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Nenhuma
Embora o titânio e suas ligas sejam amplamente utilizados na implantodontia e os resultados das experiências clínicas comprovarem que estes materiais apresentam excelente biocompatibilidade, existem questionamentos quanto às propriedades físico-químicas ideais das superfícies dos implantes de titânio cppaarrroaap crstieee rdoísabtdtieceras sus musãpaoe roifsmisceipaooiisnr ttdeagnorstae çismã, opu lmaadnaet qevusea zdd aeq ueti etd âuanr iaood soasuienroadi.na t Nenogã roea nçeãtsaotnã otéo ,di neotfsei nnmisdaoomdse enlnoats e l iptdaeerrpaae tnuddreaefi.n ntEiers tdaaass ligação das células com a superfície do implante. A composição química e a topografia da superfície e métodos de subtração e de revestimentos utilizados em modificações de superfícies de titânio comercial implantes dentários foram estudados por espectroscopia de emissão de fotoelétrons por raios-X (XPS), espectroscopia por energia dispersiva (EDS), microscopia eletrônica de varredura (MEV), microscopia de força atômica (AFM), e difração de raios X (XRD). As amostras foram dispostas em cinco grupos, de acordo com tratamento de superfície: (1) duplo ataque ácido, (2) anodização e incorporação de Ca/P, (3) condicionamento ácido e deposição de Ca/P, (4) plasma spray de hidroxiapatita, e (5) jateamento de Ca/P mais ataque ácido. As análises através de XPS demonstraram que as concentrações de Ti, O e C na superfície foi diferente entre os grupos, o que pode ser atribuído a diversos processos que foram submetidos ao implante na sua fabricação. Além disso, foi demonstrada a presença dos elementos mencionados pelo fabricante nos grupos 1, 2 e 4, mas a ausência de Ca e P nos grupos 3 e 5, divergindo da informação fornecida pelo fabricante. No entanto, eles foram demonstrados em pequenas quantidades por EDS. A análise da composição de contaminação da superfície por EDS em todos os grupos revelou a presença dos elementos C, Na, Si, Nb, Cl, K, V, Al e Fe, atribuído aos elementos de liga, ao processo de fabricação ou à manipulação dos implantes. A análise por XRD demonstrou além da presença de titânio em todos os grupos, a presença de hidreto de titânio no grupo 1, anatase (TiO2) no grupo 2, e hidroxiapatita sintética no grupo 4. O aspecto topográfico do tratamento abrasivo, erosivo e tratamentos de revestimento foram diferentes para os diferentes tratamentos de superfície, como observado por SEM e AFM. O tratamento abrasivo associado ao erosivo aumentou o parâmetro de rugosidade Sa e o tratamento erosivo sozinho diminuiu o Sa. Os parâmetros Ssk e Ska para as superfícies estudadas variaram os valores entre negativos e positivos, indicando que as superfícies dos grupos 2 e 4 são compostas por uma superfície áspera com perfil aleatório de picos e vales, sendo a prevalência por vales apresentando boa molhabilidade. Na seqüência as superfícies dos grupos 4, 1 e 3, respectivamente apresentaram as mesmas características em menor relevância.
Although titanium and its alloys are widely used in implantology and results of clinical trials demonstrate that these materials show excellent biocompatibility, there are doubts about the ideal physicochemical properties of the titanium implants surfaces to achieve an adequate and lasting osseointegration. However, the ideal parameters to define the titanium surface properties of dental implants are not yet defined in the literature. These features are important, since osseointegration is heavily dependent on the bonding of the cells with the implant surface. The chemical composition and the surface topography of subtractive and coating methods used in surface modifications of commercial titanium dental implants were studied by X-ray photoelectron spectroscopy (XPS), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray diffraction (XRD). The groups were: (1) double acid etching, (2) anodization and incorporation of Ca/P, (3) acid etching and deposition of Ca/P, (4) hydroxyapatite- blasting, and (5) Ca/P-blasting and acid etching. The XPS analysis showed that the concentrations of O, Ti and C on the surface were different between the groups, which can be attributed to the different processes they are subjected to the implants in their manufacture. Analysis by XPS showed the presence of the elements mentioned by the manufacturer in groups 1, 4, and 5, did not reveal the presence of Ca and P in groups 2 and 3, as mentioned by the manufacturer. However, they were demonstrated in very small amounts by EDS. The composition analysis of surface contamination viewed by EDS in all groups revealed the presence of C, Na, Si, Nb, Cl, K, Al and Fe impurities, attributed to the manufacturing process and handling of the implants. The XRD analysis showed the presence of titanium hydride in group 1, the absence of Ca and P in group 2 and V and Al in group 3 (informed by the manufacturers). However, the presence of Al and V in the latter group was confirmed by the EDS analysis, but not the Ca in the former. The topographical aspect of abrasive, erosive and coating treatments were different for the different surface treatments, as observed by SEM and AFM. The abrasive treatment associated with the erosion increased the rugosity parameter Sa and the erosive treatment decreased it. The parameters Ssk and Ska ranged values between negative and positive, indicating that the areas in groups 2 and 4 were composed of a random rough surface with a profile of peaks and valleys, with the prevalence of valleys with good wettability. The surfaces of groups 4, 1, and 3 presented the same characteristics in lesser relevance.
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Castilho, Guilherme Augusto Alcaraz. "Caracterização da superfície de implantes odontólogicos a base de titânio." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2006. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=80.

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A especialidade odontológica da implantodontia tem por fundamento a implantação de artefatos metálicos, normalmente feitos de titânio comercialmente puro, para a substituição de elementos dentais perdidos. O titânio apresenta características favoráveis como biomaterial e os implantes odontológicos atuais apresentam alto índice de sucesso devido à capacidade de osseointegração, que é a união entre o osso e o implante sem interposição de tecido fibroso. Três dos maiores fabricantes nacionais de implantes foram escolhidos para participarem do estudo. Um quarto fabricante, estrangeiro, foi escolhido para participar do trabalho como padrão de comparação. Cada fabricante teve três amostras de um modelo de acabamento superficial liso (usinado) e três amostras de um modelo de acabamento superficial poroso analisadas. O estudo da composição química superficial e da morfologia dos implantes foi realizado utilizando-se espectroscopia de elétrons excitados por raios X (XPS), microscopia eletrônica de varredura (MEV) e análise de microssonda. A superfície dos implantes é composta basicamente por titânio, oxigênio e carbono. Alguns contaminantes comumente encontrados na superfície de implante foram verificados nas amostras, mas nenhum contaminante indesejado foi verificado neste estudo. A camada superficial de óxido é composta principalmente por dióxido de titânio (TiO2), outros óxidos como TiO e Ti2O3 também foram encontrados em menor quantidade. O carbono encontrado na superfície foi atribuído aos processos de fabricação a que os implantes são submetidos pelos fabricantes. Os outros elementos encontrados na superfície, nitrogênio, fósforo e silício, aparecem em pequena concentração. Não foi percebida discrepância entre as composições superficiais dos implantes nacionais e importados. As imagens de microscopia eletrônica realizadas em diferentes aumentos, de 35 a 3500, revelaram características semelhantes entre os implantes de acabamento superficial liso, com marcas de estriações causadas pelo processo de usinagem. Nos implantes de acabamento superficial poroso, a morfologia variou para todos os modelos estudados, este fato foi atribuído aos diferentes métodos utilizados por cada fabricante para a modificação da superfície. Os implantes foram submetidos a um teste de bioatividade em solução de SBF para verificar a formação de uma camada de hidroxiapatita na superfície. As amostras foram divididas em três grupos e deixadas em solução a 37 C por 7, 14 e 21 dias. Após serem removidos da solução a análise de XPS foi novamente realizada e logo depois a superfície dos implantes foi submetida à análise por microssonda. O XPS acusou a presença de alguns componentes da solução SBF na superfície das amostras. No entanto, a análise de microssonda não revelou a formação de uma camada de hidroxiapatita e sim a deposição de cristais de NaCl em alguns implantes.
Dental implantology uses metallic devices made of commercially pure titanium in order to replace lost teeth. Titanium presents favorable characteristics as biomaterial and modern implants are capable of integrate, witch is the union between bone and implant without fibrous tissue development. Three of the major Brazilian implant manufacturers were chosen to join the study. A foreign manufacturer participated as standard. The manufacturers had three specimens of each implant with two different surface finishing, as machined and porous, submitted to analysis. Surface chemical composition and implant morphology were analyzed by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and microprobe. Implant surface is mainly composed of titanium, oxygen and carbon. Few contaminants commonly present on implant surface were found on samples. Superficial oxide layer is basically composed of titanium dioxide (TiO2), another oxides as TiO and Ti2O3 were also found in small amount. Carbon on implant surface was attributed to manufacturing process. Nitrogen, Phosphorous and Silicon appeared in smaller concentration on surface. There was no surface discrepancy among foreign and Brazilian made implants. SEM images were made on different magnification, 35 X to 3500 X, and showed similarity among as machined implants. Porous surface finishing implants presented distinct morphology. This result was attributed to differences on manufacturing process. Implant bioactivity was accessed through immersion on simulated body solution (SBF) in order to verify formation of an hidroxiapatita (HA) layer on surface. Samples were divided on three groups according to immersion time: G1 (7 days), G2 (14 days), G3 (21 days), and deep in SBF solution at 37 C. After being removed from solution, XPS analyses were made and then implants have been submitted to microprobe analysis. XPS showed some components of SBF solution on sample surface but microprobe examinations did not confirmed the formation of HA layer. However, it was observed NaCl crystals on some implant surface.
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Chrcanovic, Bruno Ramos. "Tratamentos de superfície aplicados a titânio para uso em implantes odontológicos." CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2012. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=199.

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Desde que Brånemark cunhou o termo osseointegração após a sua descoberta acidental em 1962, o uso de implantes osseointegráveis ganhou força e dentre estes, particularmente os implantes dentais, que são hoje o estado da arte para a terapia reabilitadora oral. Esta fixação biológica (osseointegração) é considerada um pré-requisito para próteses implanto-suportadas e para seu sucesso a longo prazo. Vários fatores foram identificados como particularmente importantes para a incorporação do implante no osso, sendo um deles as propriedades da superfície do implante. Tendo em vista esta importância, o presente trabalho tem como objetivo investigar as modificações nas propriedades morfológicas e fisico-químicas da superfície de titânio utilizado na confecção de implantes odontológicos introduzidas após o tratamento por diferentes metodos de acabamento (jateamento, ataque ácido, imersão em solução para incoporação de Ca/P, formação de oxido de titânio nanoestruturado via anodização). Na primeira parte do presente estudo determinaram-se as melhores condições de jateamento para se obter parâmetros de rugosidade adequados. Para isso, foram inseridas três variáveis: pressão do jateamento, granulometria média de partículas de Al2O3, e área de superfície escaneada. Na segunda parte, discos de titânio foram jateados (com a pressão de jateamento determinada a partir da primeira parte) e submetidos a cinco tratamentos ácidos diferentes. Além disso, dois grupos duplicados foram submetidos à imersão em fluido simulado humano (SBF) e em solução supersaturada de calcificação (SCS). Na terceira parte, a fim de determinar a influência do tempo de imersão das amostras em SBF e SCS em suas características superficiais, novos discos de titânio c.p. foram jateadas com partículas de Al2O3 com granulometria média de 250 μm a 4 bar, sem nenhum tipo de tratamento ácido. Na quarta parte do estudo, investigamos a efetividade de um método de eletropolimento de titânio. Na quinta parte do estudo, investigamos a formação de nanoporos de TiO2 em titânio a partir da técnica de anodização. Com base nos resultados, observou-se que nem sempre há um aumento linear nos parâmetros de rugosidade com o aumento da pressão de jateamento, da granulometria média de Al2O3 e com o aumento da área de varredura, embora haja uma tendência. Frente às situações aqui propostas, definimos a amostra jateada a uma pressão de 4 bar com partículas de Al2O3 com granulometria média de 250 μm como apresentando a melhor superfície para uma melhor osseointegração, baseando-se em resultados de rugosidade apresentados na literatura. Dos tratamentos ácidos diferentes aplicados após o jateamento, dois se mostraram eficientes em remover o alumínio da superfície, que apresenta toxicidade tecidual. Um tempo de imersão de 28 dias em SBF produz uma camada de apatita suficiente para encobrir totalmente a superfície de titânio, independente das condições de jateamento ou de tratamento ácido realizadas. A imersão em solução de SCS produziu a deposição de apatitas mais rapidamente do que em amostras submersas em SBF. As condições de eletropolimento aqui estudadas não foram suficientes para produzir uma superfície homogeneamente polida, necessitando-se de mais experimentação variando-se as condições do processo. O processo de anodização de titânio demonstrou que o aumento da tensão aplicada pode vir a aumentar o diâmetro médio dos poros na superfície. Apesar disso, os resultados se apresentaram bastante diferentes de acordo com as condições aplicadas. Assim, pode ser interessante testar os mesmos parâmetros a temperaturas diferentes, uma vez que o aumento de temperatura irá acelerar a taxa de dissolução química do TiO2 formado, podendo dificultar uma formação homogênea de poros por toda a superfície. Além disso, faz-se necessário um estudo de imersão destas amostras após a anodização em soluções ácidas, para que estes nanoporos possam ser revelados por debaixo da camada de excesso de resíduos de TiO2, supondo-se que tenham se formado. Sugere-se também a realização da anodização em soluções eletrólitas menos ácidas já que, de acordo com a literatura, em valores mais altos de pH da solução eletrolítica o ataque químico à camada de TiO2 é drasticamente mais lento do que em eletrólitos mais ácidos.
Since Brånemark coined the term osseointegration after its accidental discovery in 1962, the use of osseointegrated implants has gained strength, particularly the dental implants, which are now the state of the art for oral rehabilitation therapy. This biological fixation (osseointegration) is considered a prerequisite for implant-supported prostheses and for their long term success. Several factors were identified as particularly important for the incorporation of implant in the bone, one being the properties of the implant surface. Given this importance, this study aims to investigate the changes in morphological and physico-chemical properties of titanium surfaces used in the manufacture of dental implants introduced after treatment by different methods of finishing (sandblasting, acid etching, immersion in solutions for the incorporation of Ca/P, formation of nanostructured titanium oxide via anodization). The first part of the study tried to determine the sandblasting conditions that provided the highest values of roughness parameters, varying the sandblasting pressure, the average particle size of Al2O3 powder, and the scanned surface area. In the second part, titanium disks were sandblasted and subjected to five different acid treatments. Furthermore, two duplicate groups were submitted to immersion in fluid simulated human (SBF) and in solution supersaturated calcification (SCS). In the third part, in order to determine the influence of immersion time of the samples in SBF and SCS in their surface features, new titanium discs were sandblasted with Al2O3 (250 μm 4 bar) without any acid treatment. In the fourth part of the study, we investigated the effectiveness of a method for electropolishing of titanium. In the fifth part of the study, we investigated the formation of TiO2 nanotubes from titanium anodization technique. Based on the results, it was observed that there is not always a linear increase in roughness parameters with increasing sandblasting pressure, average grain size of Al2O3 and with increasing scanning area, although there is a trend. We have defined the sample sandblasted at a pressure of 4 bar with Al2O3 powder with an average particle size of 250 μm as presenting the best surface for a better osseointegration, based on roughness results presented in the literature. Two of the five acid treatments applied after the sandblasting were efficient in removing the aluminum from the surface. An immersion period of 28 days in SBF produces a layer of apatite thick enough to totally cover the titanium surface, independent of sandblasting or acid treatment performed. The immersion in SCS solution produced the deposition of apatites faster than in the samples submerged in SBF. The electropolishing conditions studied here were not sufficient to produce a homogeneously polished surface. Thus, more experimentation varying the process conditions is required. The titanium anodizing process showed that the increase of the applied voltage can produce an increase in the average pore diameter on the surface. Notwithstanding, the anodization results presented quite different from one sample to another. So it may be interesting to test the parameters with different temperatures, since the temperature increase may accelerate the dissolution rate of the TiO2 formed, being able to hamper a homogeneous formation of pores throughout the surface. Furthermore, it is necessary to study these samples after anodization by immersion in acidic solutions, so that these nanopores can be revealed beneath the excess layer of TiO2, assuming that it has been formed. It is also suggested the realization of anodization with less acidic electrolytic solutions since, according to the literature, in higher values of pH of the electrolyte solution etching of the TiO2 layer is dramatically slower than in more acidic electrolyte.
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Shirazibeheshtiha, Seyedalireza [Verfasser]. "Computational simulation of piezo-electrically stimulated bone adaption surrounding activated teeth implants / Seyedalireza Shirazibeheshtiha." Hannover : Technische Informationsbibliothek (TIB), 2017. http://d-nb.info/1128660539/34.

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Gordon, Ross. "Criteria to Maintain Periodontally-involved Teeth versus Extract and Replace with Implants: A Delphi Study." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1502792951637218.

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Books on the topic "Teeth implant"

1

Marvin, Melladee. Pulp sensation in teeth adjacent to implant sites. [Toronto: University of Toronto, Faculty of Dentistry], 1996.

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Saadoun, Andre P. Esthetic soft tissue management of teeth and implants. Chichester, West Sussex: John Wiley & Sons, 2013.

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Saadoun, Andrè P. Esthetic Soft Tissue Management of Teeth and Implants. West Sussex, UK: John Wiley & Sons, Ltd,., 2012. http://dx.doi.org/10.1002/9781118702673.

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David, Harris. The dental amputee: What everyone who loses their teeth needs to know. Dublin, Ireland: Londubh Books, 2015.

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Cong ming zhi ya bu hou hui. Taibei Shi: Da kuai wen hua chu ban gu fen you xian gong si, 2015.

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Avivi-Arber, Limor. On prosthetic replacement of missing single maxillary anterior teeth with dental implants. [Toronto: Faculty of Dentistry, University of Toronto], 1993.

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Au ireba, inpuranto dotchi ga ii no: Sōshūhen : irete kara kōkaishinai tame ni. Tōkyō: Nagasaki Shuppan, 2010.

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Moyers, Symposium (31st 2004 Ann Arbor Mich ). Implants, microimplants, onplants and transplants: New answers to old questions in orthodontics. Ann Arbor, Mich: University of Michigan, 2005.

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Shannon, Joyce Brennfleck. Dental care and oral health sourcebook: Basic consumer health information about caring for the mouth and teeth, including facts about dental hygiene and routine care guidelines, fluoride, sealants, tooth whitening systems, cavities, root canals, extractions, implants, veneers, dentures, and orthodontic and orofacial procedures; along with information about periodontal (gum) disease, canker sores, dry mouth, temporomandibular joint and muscle disorders (TMJ), oral cancer, and other conditions that impact oral health ... 4th ed. Detroit, MI: Omnigraphics, 2012.

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Fugazzotto, Paul A. Implant and Regenerative Therapy in Dentistry: A Guide to Decision Making. Wiley & Sons, Incorporated, John, 2009.

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Book chapters on the topic "Teeth implant"

1

Iocca, Oreste, Giuseppe Bianco, and Simón Pardiñas López. "Teeth or Implants?" In Evidence-Based Implant Dentistry, 33–57. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-26872-9_3.

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Kher, Udatta. "PET for Multirooted Teeth." In Partial Extraction Therapy in Implant Dentistry, 105–28. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33610-3_5.

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Ebenezer, Supriya, Vinay V. Kumar, and Andreas Thor. "Basics of Dental Implantology for the Oral Surgeon." In Oral and Maxillofacial Surgery for the Clinician, 385–405. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1346-6_18.

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AbstractOver the past decades, implant dentistry has evolved to be a very predictable treatment modality for the replacement of lost teeth and has now become one of the most common oral surgical procedures carried out worldwide. This chapter introduces the history and evolution of dental implants, discusses the concept of osseointegration, mentions the types of implants and discusses clinical decision making and execution of straight forward implant placement. It must be noted that the field of implantology is rapidly developing with new treatment concepts and increasing use of digital technology. The surgical part of implant treatment although extremely important, is only a part of the overall treatment, the other important factors being the laboratory and prosthodontics. This chapter only provides a basic surgical overview of implantology for the beginner surgeon clinician.
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Saadoun, André P. "Esthetic Implant Treatment." In Esthetic Soft Tissue Management of Teeth and Implants, 102–59. West Sussex, UK: John Wiley & Sons, Ltd,., 2013. http://dx.doi.org/10.1002/9781118702673.ch6.

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Kelekis-Cholakis, Anastasia, Reem Atout, Nader Hamdan, and Ioannis Tsourounakis. "An Introduction to Understanding the Basics of Teeth vs. Dental Implants: Similarities and Differences." In Peri-Implant Complications, 1–20. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-63719-8_1.

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Cullum, Daniel R., and Douglas Deporter. "Immediate Implant Placement for Single- and Multi-Rooted Teeth." In Minimally Invasive Dental Implant Surgery, 335–66. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781119421405.ch18.

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Kher, Udatta. "PET for Multiple Teeth and Full-Arch Implant-Supported Reconstructions." In Partial Extraction Therapy in Implant Dentistry, 191–207. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33610-3_8.

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Rosen, Paul S., and Stuart J. Froum. "Decision-Making Algorithm for Regeneration of the Periodontally Compromised Tooth: Maintaining these Teeth when Dental Implants Provide a Compelling Alternative Treatment Option." In Implant Site Development, 54–74. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781119136194.ch4.

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Larheim, Tore A., and Per-Lennart A. Westesson. "Teeth and Dental Implants." In Maxillofacial Imaging, 271–86. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53319-3_7.

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Tiong, Noah Teo Bo, and Loo Sun Din. "Replacing Missing Teeth: Dental Implants." In Atlas of Operative Maxillofacial Trauma Surgery, 779–99. London: Springer London, 2020. http://dx.doi.org/10.1007/978-1-4471-5616-1_44.

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Conference papers on the topic "Teeth implant"

1

Baker, Maribel I., Jack E. Lemons, and Alan W. Eberhardt. "Bone Properties Surrounding Hydroxyapatite-Coated Custom Osseous Integrated Dental Implants." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19020.

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Dental implants are widely used for replacement of teeth and correction of defects in maxillary and mandibular bone. Their effectiveness is largely dependent upon biostability and osteointegration between the bone and implant. One of the major causes of dental implant failure is aseptic loosening or resorption of bone at the interface [2]. In order to diminish such failures, coatings and surface roughening are used to enhance osteointegration and biostability between the bone and the implant [3].
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Hasan, Md Abu. "Effects of Lingualized and Linear Occlusion Schemes on the Stress Distribution of an Implant Retained Overdenture Using Finite Element Analysis." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52265.

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This study compares the effects of lingualized and linear occlusion schemes on the stress distribution of an implant retained mandibular overdenture (IRO) using finite element analysis (FEA). A high fidelity solid model of mandibular overdenture incorporating cusps and fossae of occlusal surface with two anterior implants in the canine regions and residual ridge support in the posterior region of the alveolar bone was modeled in SolidWorks and imported to ANSYS for stress analysis. The load was applied vertically to the central grooves and buccal cusp tips of the premolars and molar teeth for the lingualized and linear occlusion respectively. The loading magnitudes were 200 N on the premolars and 200 N on the molar teeth with multiple contact locations. The results show that the linear occlusion scheme generated higher stress in the implants and the prosthetic bar than the lingualized occlusion. The locations of high stress concentrations were the neck of the implants and the implant-prosthetic bar intersection for both the occlusion schemes. However, in the cortical bone lingualized occlusion loading scheme generated higher stress (max principal stress) than the linear one suggesting possibility of greater bone loss. The results of this study could be used to comprehend the stress distribution in the denture teeth, base, bone-implant interface and surrounding bone for the two occlusion concepts and may be of help to the clinicians in choosing the right scheme for the edentulous patients.
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Biswas, B. K., S. Bag, and S. Pal. "Measurement of Biting Force Over Dental Implant." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19340.

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Measurement of biting or chewing force is important as very little data regarding this is available in the literature. The biting force is generated by the action of the associated musculature of mandible and maxilla, ultimately transmitted through the teeth on the material which is being bitten or chewed. The objective was to find the range of magnitude of the force for each pair teeth. Biting force measurement was performed over dental implant to observe its biofunctionality. In this work, a load cell was used along with a newly developed transduction device for measuring force. The biting force was measured for ten subjects with dental implant and compared with normal subjects without any dental disease. Result showed our design of screw-root dental implant is comparable to normal tooth.
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4

Hasan, Md Abu, and Panos S. Shiakolas. "3D Finite Element Stress Analysis of an Implant Supported Overdenture Under Bruxism and Lingualized Loading Conditions." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-51688.

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Bruxism is a nonfunctional motor activity that is characterized by grinding and clenching of the teeth. It has been postulated that bruxism causes excessive occlusal load on the dental implant and its superstructures leading to biological and biomechanical complications. While many researchers suggest that grinding/clenching causes early implant complications and accelerated bone loss, others indicate that the long term effects are still unclear. The goal of this study is to analyze the effect of bruxism loading condition on the stress distribution of an implant supported overdenture (ISO) using finite element analysis (FEA) and compare the results with one of the most functionally efficient occlusion schemes in the clinical dentistry — lingualized occlusion. A high fidelity solid model of a mandibular denture encompassing lingual and buccal cusps, mesial and distal fossae supported by four implants and a connecting titanium prosthetic bar, resting on alveolar bone were modeled in SolidWorks 2013 following proper clinical guidelines and imported to ANSYS 15.0 for stress analysis. The results of the study demonstrate that the stress distribution in the implant prostheses and surrounding bone is significantly affected due to bruxism as compared to the lingualized loading. While the location of the maximum stress concentration was the same (neck of the posterior implants) for both loading conditions, there was an increase of approximately 115% von-Mises stress for bruxism loading condition as compared to the lingualized occlusion. The maximum principal stress in the cortical bone surpassed the ultimate tensile strength limit of the jaw bone implying possibility of bone resorption in the peri-implant area.
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Leu, Ming C., and Amit Gawate. "Computer Aided Design of Implant Based Dental Restorations." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59241.

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Implant based dental restorations have many advantages over standard removable dentures because using implants can prevent the loss of jawbones, help restore facial features, and enable the patients to get firm bites. A critical step in this kind of restorations is the fabrication of the dental bar on which the denture sits. A dental bar is patient-specific because each patient’s jawbone is unique and the device needs to be conforming to the patient’s gingival surface. The design of a dental bar is crucial to the success of dental restorations. Traditionally, designing a dental bar is a lengthy and laborious process and requires high levels of craftsmanship. There have been attempts to develop CAD/CAM systems towards automating design and fabrication of dental restorations. However, currently available commercial CAD/CAM systems are only capable of making crowns, bridges, copings, onlays and veneers, and they are not capable of making dental restorations involving multiple teeth. The present paper describes a method for computer aided design of a dental bar used in implant based dental restorations. The method starts with a set of digital scan data representing the patient’s gingival surface and generates a CAD model of a dental bar that is ready for fabrication of a physical dental bar.
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Leu, Ming C., and Parthiban Delli. "Digital Manufacturing of Implant Based Dental Restorations." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59242.

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Traditional methods of producing dental bars for overdentures involve tedious and time-consuming operations that demand substantial human labor and demanding skills. Though there exist several CAD/CAM systems that have been developed for various dental restorations like bridges, crowns, etc., there exists no commercial CAD/CAM system at present for design and fabrication of dental restorations for missing multiple teeth. In the research described in the present paper, CAD models of dental bars for implant-retained dental restorations were used as input for three types of fabrication processes: rapid prototyping followed by investment casting, CNC milling, and direct digital manufacturing. Details of material and process combinations and results of comparing these three types of processes, including an analysis on dimensional accuracy, are discussed.
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Zhong, Yicheng, Ning Dai, Rui Xing, Xiaosheng Cheng, and Yuchun Sun. "Research on digitalized design technology of teeth shape support implant guide based on image guide." In 2016 9th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI). IEEE, 2016. http://dx.doi.org/10.1109/cisp-bmei.2016.7852970.

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Starly, Binil, Shih-Feng Lan, and David Schmidtke. "Customized Release of Metronidazole From Composite Casted Rings of Poly-Caprolactone/Alginate for Periodontal Drug Delivery." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14177.

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Dental implants provide support for dental crowns and bridges by serving as abutments for the replacement of missing teeth. The objective of this study was to demonstrate a novel method of controlled localized delivery of antibacterial agents to an implant site using a custom fabricated ring. The study involved incorporating a model antibacterial agent (metronidazole) into custom designed Poly-ε-Caprolactone/Alginate (PCL/Alginate) composite rings to produce the intended controlled release profile. In vitro release studies indicate that pure (100%) alginate rings exhibited an expected burst release of metronidazole in the first few hours, whereas Alginate/PCL composite rings produced a medium burst release followed by a sustained release for a period greater than 4 weeks. By varying the PCL/Alginate weight ratios, we have shown that we can control the amount of antibacterial agents released to provide the minimal inhibitory concentration needed for adequate protection. The developed system demonstrates a controllable drug release profile and the potential for the ring to inhibit bacterial biofilm growth for the prevention of diseases such as peri-implantitis resulting from bacterial infection at the implant site.
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Ali, Musaddiq Al, Amjad Y. Sahib, and Muazez Al Ali. "Teeth Implant Design using Weighted Sum Multi-objective Function for Topology Optimization and Real Coding Genetic Algorithm." In International Conference on Industrial Application Engineering 2018. The Institute of Industrial Application Engineers, 2018. http://dx.doi.org/10.12792/iciae2018.037.

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Ammar, Hussein H., Victor H. Mucino, Peter Ngan, Richard J. Crout, and Osama M. Mukdadi. "Patient-Specific 3D Finite-Element Analysis of Miniscrew Implants During Orthodontic Treatment." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-13068.

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Miniscrew implants have seen increasing clinical use as orthodontic anchorage devices with demonstrated stability. The focus of this study is to develop and simulate operative factors, such as load magnitudes and anchor locations to achieve desired motions in a patient-specific 3D model undergoing orthodontic treatment with miniscrew implant anchorage. A CT scan of a patient skull was imported into Mimics software (Materialise, 12.1). Segmentation operations were performed on the images to isolate the mandible, filter out noise, then reconstruct a smooth 3D model. A model of the left canine was reconstructed with the PDL modeled as a thin solid layer. A miniscrew was modeled with dimensions based on a clinical implant (BMK OAS-T1207) then inserted into the posterior mandible. All components were volumetrically meshed and optimized in Mimics software. Elements comprising the mandible bone and teeth were assigned a material based on their gray value ranges in HU from the original scan, and meshes were exported into ANSYS software. All materials were defined as linear and isotropic. A nonlinear PDL was also defined for comparison. For transverse forces applied on the miniscrew, maximum stresses increased linearly with loading and appeared at the neck or first thread and in the cortical bone. A distal tipping force was applied on the canine, and maximum stresses appeared in the tooth at the crown and apex and in the bone at the compression surface. Under maximum loading, stresses in bone were sufficient for resorption. The nonlinear PDL exhibited lower stresses and deflections than the linear model due to increasing stiffness. Numerous stress concentrations were seen in all models. Results of this study demonstrate the potential of patient-specific 3D reconstruction from CT scans and finite-element simulation as a versatile and effective pre-operative planning tool for orthodontists.
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